fixed query bug.

src/DotNetCore.CAP.SqlServer/SqlServerMonitoringApi.cs

@@ -94,7 +94,7 @@ _options.Schema);
             {
                 where += " and name=@Name";
             }
-            if (!string.IsNullOrEmpty(queryDto.Name))
+            if (!string.IsNullOrEmpty(queryDto.Group))
             {
                 where += " and group=@Group";
             }

src/DotNetCore.CAP/Dashboard/Pages/ReceivedPage.cshtml

@@ -51,7 +51,7 @@
                 <div class="btn-toolbar btn-toolbar-top">
                     <form class="row">
                         <span class="col-md-2">
-                            <input type="text" class="form-control" name="name" value="@Query("group")" placeholder="@Strings.MessagesPage_Query_MessageGroup" />
+                            <input type="text" class="form-control" name="group" value="@Query("group")" placeholder="@Strings.MessagesPage_Query_MessageGroup" />
                         </span>
                         <span class="col-md-3">
                             <input type="text" class="form-control" name="name" value="@Query("name")" placeholder="@Strings.MessagesPage_Query_MessageName" />